component
STM32F401CBU3
Public Made by Adomby adom
STMicroelectronics Microcontrollers (MCU/MPU/SOC), UFQFPN-48(7x7). Pinout checked against ST's open pin data, KiCad symbol/footprint/3D.
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README.mdadded+85@@ -0,0 +1,85 @@+# STM32F401CBU3++**STMicroelectronics** · Microcontrollers (MCU/MPU/SOC) · UFQFPN-48(7x7)++STM32F401CBU3 from STMicroelectronics, in a UFQFPN-48(7x7). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model, then checked against ST open pin data); symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | VBAT | power_in | Battery supply voltage input, 1.7 V to 3.6 V, for RTC and backup domain. |+| 2 | PC13 | bidirectional | GPIO with RTC tamper input, RTC event output, and eventout capability. |+| 3 | PC14-OSC32_IN | bidirectional | GPIO with 32.768 kHz oscillator input function, internally connected oscillator input. |+| 4 | PC15-OSC32_OUT | bidirectional | GPIO with 32.768 kHz oscillator output function, internally connected oscillator output. |+| 5 | PH0-OSC_IN | bidirectional | GPIO with 4-26 MHz main oscillator input function. |+| 6 | PH1-OSC_OUT | bidirectional | GPIO with 4-26 MHz main oscillator output function. |+| 7 | NRST | bidirectional | Reset input with internal weak pull-up resistor and Schmitt trigger for hardware reset generation. |+| 8 | VSSA/VREF- | power_in | Analog ground reference, must be connected to VSS, serves as ADC reference negative input. |+| 9 | VDDA/VREF+ | power_out | Analog supply voltage 1.8 V to 3.6 V and ADC reference positive, requires 100 nF to 1 µF decoupling capacitor to VSSA. |+| 10 | PA0 | bidirectional | GPIO with ADC input channel 0, wake-up capability, and timer input/output function. |+| 11 | PA1 | bidirectional | GPIO with ADC input channel 1 and timer input/output capability. |+| 12 | PA2 | bidirectional | GPIO with ADC input channel 2, USART2 transmit, and timer input/output capability. |+| 13 | PA3 | bidirectional | GPIO with ADC input channel 3, USART2 receive, and timer input/output capability. |+| 14 | PA4 | bidirectional | GPIO with ADC input channel 4, SPI1/SPI3 chip select, and timer capability. |+| 15 | PA5 | bidirectional | GPIO with ADC input channel 5, SPI1 clock, and timer input/output capability. |+| 16 | PA6 | bidirectional | GPIO with ADC input channel 6, SPI1 MISO, TIM1 break-in, and timer input/output capability. |+| 17 | PA7 | bidirectional | GPIO with ADC input channel 7, SPI1 MOSI, TIM1 complementary output, and timer capability. |+| 18 | PB0 | bidirectional | GPIO with ADC input channel 8, TIM1 complementary output, and timer input/output capability. |+| 19 | PB1 | bidirectional | GPIO with ADC input channel 9, TIM1 complementary output, and timer input/output capability. |+| 20 | PB2 | bidirectional | GPIO with boot mode select functionality and eventout capability, labeled BOOT1 option. |+| 21 | PB10 | bidirectional | GPIO with I2C2 clock, SPI2 clock, and timer input/output capability. |+| 22 | VCAP_1 | passive | Decoupling capacitor connection for internal voltage regulator, 100 nF to 1 µF capacitor required between VCAP_1 and VCAP_2. |+| 23 | VSS | power_in | Ground reference voltage, must be connected to power supply ground plane. |+| 24 | VDD | power_out | Digital supply voltage, 1.7 V to 3.6 V operating range. |+| 25 | PB12 | bidirectional | GPIO with SPI2 chip select, I2C2 SMBus alert, TIM1 break-in, and timer capability. |+| 26 | PB13 | bidirectional | GPIO with SPI2 clock, TIM1 complementary output, and timer input/output capability. |+| 27 | PB14 | bidirectional | GPIO with SPI2 MISO, TIM1 complementary output, and timer input/output capability. |+| 28 | PB15 | bidirectional | GPIO with SPI2 MOSI, RTC reference input, TIM1 complementary output, and timer capability. |+| 29 | PA8 | bidirectional | GPIO with I2C3 clock, USART1 clock, TIM1 output, USB SOF output, and MCO1 capability. |+| 30 | PA9 | bidirectional | GPIO with I2C3 SMBus alert, USART1 transmit, TIM1 output, and USB VBUS input capability. |+| 31 | PA10 | bidirectional | GPIO with USART1 receive, TIM1 output, USB ID input, and timer capability. |+| 32 | PA11 | bidirectional | GPIO with USART1 CTS, TIM1 output, and USB DM signal line capability. |+| 33 | PA12 | bidirectional | GPIO with USART1 RTS, TIM1 external trigger, and USB DP signal line capability. |+| 34 | PA13 | bidirectional | GPIO/JTAG TMS pin shared with SWD data I/O (SWDIO) for debug interface. |+| 35 | VSS | power_in | Ground reference voltage, must be connected to power supply ground plane. |+| 36 | VDD | power_out | Digital supply voltage, 1.7 V to 3.6 V operating range. |+| 37 | PA14 | bidirectional | GPIO/JTAG TCK pin shared with SWD clock (SWCLK) for debug interface. |+| 38 | PA15 | bidirectional | GPIO/JTAG TDI pin with SPI1 chip select, SPI3 chip select, and timer input/output capability. |+| 39 | PB3 | bidirectional | GPIO/JTAG TDO pin shared with SWO trace output and SPI1 clock capability. |+| 40 | PB4 | bidirectional | GPIO/JTAG TRST pin with SPI1 MISO, I2C3 SDA, and timer input/output capability. |+| 41 | PB5 | bidirectional | GPIO with SPI1 MOSI, I2C1 SMBus alert, SPI3 MOSI, and timer input/output capability. |+| 42 | PB6 | bidirectional | GPIO with I2C1 clock, USART1 transmit, and timer input/output capability. |+| 43 | PB7 | bidirectional | GPIO with I2C1 data, USART1 receive, and timer input/output capability. |+| 44 | BOOT0 | input | Boot configuration pin sampled at reset, selects boot from flash or system memory, VPP during flash programming. |+| 45 | PB8 | bidirectional | GPIO with I2C1 clock, TIM4 output, TIM10 input/output, and SDIO data capability. |+| 46 | PB9 | bidirectional | GPIO with I2C1 data, SPI2 chip select, TIM4 output, TIM11 input/output, and SDIO data capability. |+| 47 | VSS | power_in | Ground reference voltage, must be connected to power supply ground plane. |+| 48 | VDD | power_out | Digital supply voltage, 1.7 V to 3.6 V operating range. |+| 49 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | STMicroelectronics |+| Package | UFQFPN-48(7x7) |+| Category | Embedded Processors & Controllers |+| Pins | 49 |++## CAD (KiCad official)++- Symbol: `STM32F401CBU3`+- Footprint: `Package_DFN_QFN:QFN-48-1EP_7x7mm_P0.5mm_EP5.15x5.15mm`+- 3D model: UFQFPN-48(7x7) (KiCad packages3D, STEP)+- 3D model files: `stm32f401cbu3-etched.step` / `stm32f401cbu3-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `stm32f401cbu3.step` / `stm32f401cbu3.glb` are the bare package body.++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [STMicroelectronics datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588922587724861440) (139 pp, sha256 `c38f92aa9d66e8cb`, retrieved 2026-10-06, tier: lcsc)+- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-sonnet-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/stm32f401cbu3-datasheet.pdf)
page.jsonadded+406@@ -0,0 +1,406 @@+{+ "slug": "stm32f401cbu3",+ "version": "0.1.0",+ "type": "component",+ "description": "STMicroelectronics Microcontrollers (MCU/MPU/SOC), UFQFPN-48(7x7). Pinout checked against ST's open pin data, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "embedded processors & controllers",+ "stm32f401cbu3",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "stm32f401cbu3.kicad_sym",+ "stm32f401cbu3.kicad_mod",+ "stm32f401cbu3.glb",+ "stm32f401cbu3.step",+ "stm32f401cbu3.lbr",+ "docs/hero.png",+ "docs/stm32f401cbu3-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html",+ "stm32f401cbu3-hero.glb",+ "stm32f401cbu3-hero.overlay.json"+ ],+ "component": {+ "mpn": "STM32F401CBU3",+ "manufacturer": "STMicroelectronics",+ "package": "UFQFPN-48(7x7)",+ "pin_count": 49,+ "category": "Embedded Processors & Controllers",+ "subcategory": "Microcontrollers (MCU/MPU/SOC)",+ "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588922587724861440",+ "parts": {+ "symbol": "stm32f401cbu3.kicad_sym",+ "footprint": "stm32f401cbu3.kicad_mod",+ "model_3d": "stm32f401cbu3-hero.glb",+ "model_3d_plain": "stm32f401cbu3.glb",+ "model_3d_step": "stm32f401cbu3-etched.step",+ "model_3d_step_plain": "stm32f401cbu3.step",+ "lbr": "stm32f401cbu3.lbr"+ },+ "distributor_links": {+ "lcsc": 1342384,+ "digikey": "STM32F401CBU3-ND",+ "mouser": "511-STM32F401CBU3"+ },+ "distributor_check": {+ "checked_at": "2026-10-06T00:22:12Z",+ "source": "Component Ocean /api/assign-pns",+ "digikey": {+ "pn": "STM32F401CBU3-ND",+ "status": "found"+ },+ "mouser": {+ "pn": "511-STM32F401CBU3",+ "status": "found"+ }+ },+ "pins": [+ {+ "number": "1",+ "name": "VBAT",+ "type": "power_in",+ "description": "Battery supply voltage input, 1.7 V to 3.6 V, for RTC and backup domain."+ },+ {+ "number": "2",+ "name": "PC13",+ "type": "bidirectional",+ "description": "GPIO with RTC tamper input, RTC event output, and eventout capability."+ },+ {+ "number": "3",+ "name": "PC14-OSC32_IN",+ "type": "bidirectional",+ "description": "GPIO with 32.768 kHz oscillator input function, internally connected oscillator input."+ },+ {+ "number": "4",+ "name": "PC15-OSC32_OUT",+ "type": "bidirectional",+ "description": "GPIO with 32.768 kHz oscillator output function, internally connected oscillator output."+ },+ {+ "number": "5",+ "name": "PH0-OSC_IN",+ "type": "bidirectional",+ "description": "GPIO with 4-26 MHz main oscillator input function."+ },+ {+ "number": "6",+ "name": "PH1-OSC_OUT",+ "type": "bidirectional",+ "description": "GPIO with 4-26 MHz main oscillator output function."+ },+ {+ "number": "7",+ "name": "NRST",+ "type": "bidirectional",+ "description": "Reset input with internal weak pull-up resistor and Schmitt trigger for hardware reset generation."+ },+ {+ "number": "8",+ "name": "VSSA/VREF-",+ "type": "power_in",+ "description": "Analog ground reference, must be connected to VSS, serves as ADC reference negative input."+ },+ {+ "number": "9",+ "name": "VDDA/VREF+",+ "type": "power_out",+ "description": "Analog supply voltage 1.8 V to 3.6 V and ADC reference positive, requires 100 nF to 1 µF decoupling capacitor to VSSA."+ },+ {+ "number": "10",+ "name": "PA0",+ "type": "bidirectional",+ "description": "GPIO with ADC input channel 0, wake-up capability, and timer input/output function."+ },+ {+ "number": "11",+ "name": "PA1",+ "type": "bidirectional",+ "description": "GPIO with ADC input channel 1 and timer input/output capability."+ },+ {+ "number": "12",+ "name": "PA2",+ "type": "bidirectional",+ "description": "GPIO with ADC input channel 2, USART2 transmit, and timer input/output capability."+ },+ {+ "number": "13",+ "name": "PA3",+ "type": "bidirectional",+ "description": "GPIO with ADC input channel 3, USART2 receive, and timer input/output capability."+ },+ {+ "number": "14",+ "name": "PA4",+ "type": "bidirectional",+ "description": "GPIO with ADC input channel 4, SPI1/SPI3 chip select, and timer capability."+ },+ {+ "number": "15",+ "name": "PA5",+ "type": "bidirectional",+ "description": "GPIO with ADC input channel 5, SPI1 clock, and timer input/output capability."+ },+ {+ "number": "16",+ "name": "PA6",+ "type": "bidirectional",+ "description": "GPIO with ADC input channel 6, SPI1 MISO, TIM1 break-in, and timer input/output capability."+ },+ {+ "number": "17",+ "name": "PA7",+ "type": "bidirectional",+ "description": "GPIO with ADC input channel 7, SPI1 MOSI, TIM1 complementary output, and timer capability."+ },+ {+ "number": "18",+ "name": "PB0",+ "type": "bidirectional",+ "description": "GPIO with ADC input channel 8, TIM1 complementary output, and timer input/output capability."+ },+ {+ "number": "19",+ "name": "PB1",+ "type": "bidirectional",+ "description": "GPIO with ADC input channel 9, TIM1 complementary output, and timer input/output capability."+ },+ {+ "number": "20",+ "name": "PB2",+ "type": "bidirectional",+ "description": "GPIO with boot mode select functionality and eventout capability, labeled BOOT1 option."+ },+ {+ "number": "21",+ "name": "PB10",+ "type": "bidirectional",+ "description": "GPIO with I2C2 clock, SPI2 clock, and timer input/output capability."+ },+ {+ "number": "22",+ "name": "VCAP_1",+ "type": "passive",+ "description": "Decoupling capacitor connection for internal voltage regulator, 100 nF to 1 µF capacitor required between VCAP_1 and VCAP_2."+ },+ {+ "number": "23",+ "name": "VSS",+ "type": "power_in",+ "description": "Ground reference voltage, must be connected to power supply ground plane."+ },+ {+ "number": "24",+ "name": "VDD",+ "type": "power_out",+ "description": "Digital supply voltage, 1.7 V to 3.6 V operating range."+ },+ {+ "number": "25",+ "name": "PB12",+ "type": "bidirectional",+ "description": "GPIO with SPI2 chip select, I2C2 SMBus alert, TIM1 break-in, and timer capability."+ },+ {+ "number": "26",+ "name": "PB13",+ "type": "bidirectional",+ "description": "GPIO with SPI2 clock, TIM1 complementary output, and timer input/output capability."+ },+ {+ "number": "27",+ "name": "PB14",+ "type": "bidirectional",+ "description": "GPIO with SPI2 MISO, TIM1 complementary output, and timer input/output capability."+ },+ {+ "number": "28",+ "name": "PB15",+ "type": "bidirectional",+ "description": "GPIO with SPI2 MOSI, RTC reference input, TIM1 complementary output, and timer capability."+ },+ {+ "number": "29",+ "name": "PA8",+ "type": "bidirectional",+ "description": "GPIO with I2C3 clock, USART1 clock, TIM1 output, USB SOF output, and MCO1 capability."+ },+ {+ "number": "30",+ "name": "PA9",+ "type": "bidirectional",+ "description": "GPIO with I2C3 SMBus alert, USART1 transmit, TIM1 output, and USB VBUS input capability."+ },+ {+ "number": "31",+ "name": "PA10",+ "type": "bidirectional",+ "description": "GPIO with USART1 receive, TIM1 output, USB ID input, and timer capability."+ },+ {+ "number": "32",+ "name": "PA11",+ "type": "bidirectional",+ "description": "GPIO with USART1 CTS, TIM1 output, and USB DM signal line capability."+ },+ {+ "number": "33",+ "name": "PA12",+ "type": "bidirectional",+ "description": "GPIO with USART1 RTS, TIM1 external trigger, and USB DP signal line capability."+ },+ {+ "number": "34",+ "name": "PA13",+ "type": "bidirectional",+ "description": "GPIO/JTAG TMS pin shared with SWD data I/O (SWDIO) for debug interface."+ },+ {+ "number": "35",+ "name": "VSS",+ "type": "power_in",+ "description": "Ground reference voltage, must be connected to power supply ground plane."+ },+ {+ "number": "36",+ "name": "VDD",+ "type": "power_out",+ "description": "Digital supply voltage, 1.7 V to 3.6 V operating range."+ },+ {+ "number": "37",+ "name": "PA14",+ "type": "bidirectional",+ "description": "GPIO/JTAG TCK pin shared with SWD clock (SWCLK) for debug interface."+ },+ {+ "number": "38",+ "name": "PA15",+ "type": "bidirectional",+ "description": "GPIO/JTAG TDI pin with SPI1 chip select, SPI3 chip select, and timer input/output capability."+ },+ {+ "number": "39",+ "name": "PB3",+ "type": "bidirectional",+ "description": "GPIO/JTAG TDO pin shared with SWO trace output and SPI1 clock capability."+ },+ {+ "number": "40",+ "name": "PB4",+ "type": "bidirectional",+ "description": "GPIO/JTAG TRST pin with SPI1 MISO, I2C3 SDA, and timer input/output capability."+ },+ {+ "number": "41",+ "name": "PB5",+ "type": "bidirectional",+ "description": "GPIO with SPI1 MOSI, I2C1 SMBus alert, SPI3 MOSI, and timer input/output capability."+ },+ {+ "number": "42",+ "name": "PB6",+ "type": "bidirectional",+ "description": "GPIO with I2C1 clock, USART1 transmit, and timer input/output capability."+ },+ {+ "number": "43",+ "name": "PB7",+ "type": "bidirectional",+ "description": "GPIO with I2C1 data, USART1 receive, and timer input/output capability."+ },+ {+ "number": "44",+ "name": "BOOT0",+ "type": "input",+ "description": "Boot configuration pin sampled at reset, selects boot from flash or system memory, VPP during flash programming."+ },+ {+ "number": "45",+ "name": "PB8",+ "type": "bidirectional",+ "description": "GPIO with I2C1 clock, TIM4 output, TIM10 input/output, and SDIO data capability."+ },+ {+ "number": "46",+ "name": "PB9",+ "type": "bidirectional",+ "description": "GPIO with I2C1 data, SPI2 chip select, TIM4 output, TIM11 input/output, and SDIO data capability."+ },+ {+ "number": "47",+ "name": "VSS",+ "type": "power_in",+ "description": "Ground reference voltage, must be connected to power supply ground plane."+ },+ {+ "number": "48",+ "name": "VDD",+ "type": "power_out",+ "description": "Digital supply voltage, 1.7 V to 3.6 V operating range."+ },+ {+ "number": "49",+ "name": "EP",+ "type": "passive",+ "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."+ }+ ],+ "provenance": {+ "extractor": "extract_pins 0.3",+ "factory_chain": {+ "factory": "2.0.0",+ "extractor": "extract_pins 0.3",+ "primary_model": "claude-haiku-4-5-20251001",+ "primary_mode": "text",+ "consensus_model": "claude-sonnet-5-5",+ "consensus": "agreed",+ "guards": "pin_guards 0.1: passed",+ "guard_notes": [+ "extractor flagged: VCAP_1 and VCAP_2 pins (22, 33 noted in Table 8 but pin 33 is VCAP_2 on LQFP100 only): These capacit; Oscillator pins (PC14-OSC32_IN, PC15-OSC32_OUT, PH0-OSC_IN, PH1-OSC_OUT): These GPIO pins have speci; Multiple VSS and VDD supply pins (pins 23, 24, 35, 36, 47, 48): All digital ground and power pins mu",+ "exposed pad 49 added from the footprint"+ ],+ "pages_sent": 56,+ "cost_usd": 0.4612,+ "at": "2026-10-06T00:21:55"+ },+ "datasheet": {+ "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588922587724861440",+ "pages": 139,+ "sha256": "c38f92aa9d66e8cb",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 49,+ "described": 49,+ "cites_pages": true,+ "refuses_to_fabricate": true+ }+ },+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ }+ },+ "visibility": "public",+ "org": "adom",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}